(a) Each licensed livestock market operator and licensed livestock dealer shall maintain a record covering all animals received and disposed of by him or his agents. The record shall include date of receipt, date of sale, and name and address of consignor and purchaser. Each animal shall be identified by any of the following (1) by a metal ear tag number, tattoo number, purebred name and registry number, or horn or hoof brand number, or any other method approved by the Secretary, and (2) by breed, sex, age, approximate weight, and health status. The record also shall show the purpose for which the animals are consigned, that is, whether for breeding, feeding, grazing, or milk production. Every record shall be retained for three years.
(b) Individual identification is not required for (1) steers, (2) spayed heifers, or (3) calves under eight months of age of beef type for feeding and grazing purposes.